Hand reading glass



Dec. 26, 1933. H. NEUWIRTH HAND READING GLASS Filed Oct. 6. 1930 IN V EN TOR. #zPMA/v Nil/Wu TH B Y 4W4 ATTORNEY Patented Dec; 26, 1933 a e 1,940,875 HANDREADI'NG GLASS Herman Neuwirth, New York, N. Y,-

. Application camber 6.

3Claims'.

This invention relates tohand reading glasses hereinafter called, readers and like-devices. More particularly, this inventionis directed" to improved constructions of handled lens rimframes of devices of the character described. Among the objects of the invention is to generally improve the construction "of handled lens rim-frames of devices of the character described comprising few and simple partswhich shall be easily assembled to form rigid mountings and whereby irregularities in the size. of the lenses dueto grinding'are compensatedfonwhich shall be cheap to manufacture, and practical and efiicient to a high degree in usex 1 Other objects of this invention willi in part be obvious and in part hereinafter. pointedout.

The' invention accordinglyconsists in the featuresof construction, combinations of elements and arrangement of parts which will be exemplified in the constructions hereinafter described and of which the scope of application will be indicated in the following claims.

In the accompanying drawing, in which is shown various possible illustrative embodiments of this invention.

Fig. 1 is a front elevational view of the improved hand reading glass or reader embodying the invention, portions of the lens rim-frame and handle being broken away to expose the interior construction.

Fig. 2 is a fragmentary cross-sectional view corresponding to Fig. 1 and showing in detail the handle attachment portion of the improved rim-frame and the wedge piece.

Fig. 3 is a fragmentary cross-sectional view corresponding to a cut taken along line 3-3 in Fig. 2. V

Fig. 4 is a perspective view of a fragmentary portion of the ring frame showing one end thereof and the wedge piece spaced from said frame,

and

Fig. 5 is a fragmentary view of a modified construction of, handle attachment portion of'the,

rim-frame using anothernovel form of wedge piece.

Referring in detail to the drawing, l0denotes w an improved hand reading glass or reader, constructed to embody the invention. Said reader 10 is seen to comprise a suitableconvexed lens 11 1 fitted into an inner groove'12a of a rim frame 12, said frame being of the split ring type. The rim frame 12 may be made of strip sheet springy material and forms a closed ring structure, preferably having the ends 121) thereof bent to form outward projections adapted to be brought in abutment to form a closure for the rim frame. Said abutting closure projections provide a'split stud which may have the exteriorsurfaces there]- of threaded as at 13. The ends 12a are preferably formed integral with the strip material of 1930. Serial No. 486, 21

(ores-939)- j the rim frame thereby eliminating operation of I the usual brazing or soldering separate threaded ends on the rim-frame as is required in the manufacture of the conventional type of rimframes of this class.

A coupling member 14 having a threaded hole portion atone end 1% thereof screwed on the threads" 13 of the ring' ends 12a, has a hole on the otherend 14b of saidv member for receiving a'screwstud head 15a.of ascrew 15'v projecting from the end of a suitable handle 16, as is clearly. shown in Figal and 2.

In forming. the ring frame endslZa, an axial passage l2cis provided through which extends a'wedge piece 17, said wedge piece having a head The notch 17b may be provided with a slit 17c extending .down through the head 17a.- to form the latter into a resilient contacting structure for engaging the lens edge 11a as shown in Fig. 3. The utilization of the invention will now be apparent. After the rim frame 12, coupling 14, wedge piece 1'7 and handle 16 have been provided as shown in the drawing and described above, the lens 11 is inserted into the groove 12a of the rim-frame. The ends 122) of the rim are then pressed into abutment, the wedge piece1'7 being first inserted'in the passage 120 formed by said abutting ends. Coupling member 14 isnext screwed on to the frame ends 1212' for clamping the lens in its seated position. Lastly, the handle 16 is attached to the coupling member 14 by screwing the theaded-head 15a of the screw into the coupling. Said head 15a in advancing into the coupling 14 comes in contact with the bottom or lower endof the wedge piece 1'? and forces the latter toward the lens so that the head end 170. of the wedge piece presses againstthe edge of the lens, thereby tightly securing the lens 11 in the ring frame 12. 3

In manufacturing lenses for readers, the edges 11a of the lenses are ground to a required diame-' ter. As it is commercially uneconomical to grind lenses to exactly the same diameter, although the same size readers are being made, there is therefore appreciable irregularity in the lens diameters. lengths of the rim-frames, difiiculty is often experienced in providing a tightly clamped connection of the ring-frames around the lenses.

Also due to slight difference in the By providing wedge pieces 17 in the manner desive, all looseness of the lenses in the ring-frames can be eliminated by simply screwing up on the handles 16 to force the wedge pieces 17 against the lenses as described above.

The slitted portion 170 extending from the notch 17b may be provided when the wedge'piece 17 is made of a resilient material, such as brass, steel, aluminum, etc. It is understood that where the piece 17 is formed of other materials such as die casting metal, fibre, wood and the like, this slitted portion 170 and even the notch 171) may be omitted since pressing such material against the edge of the lens will form a depression in the head of the wedge piece which will serve the same purpose as the notch 17b and slitted portion 170 of the wedge piece 17 described above.

In the modified construction of the invention shown in Fig, 5, the lens 11 is retained in the groove 112a of the split ring rim-frame 112. The ends 1121) of said frame are bent and fitted about the head 1170. of a Wedge piece 117 which is threaded and screwed into the threaded hole 114a of the coupling 114 terminating the end of the handle 116. The coupling 114 has its upper end tion are achieved and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiments above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

.Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A split ring of sheet material forming the rim-frame for a-magnifying glass, integral ends of said sheet material being bent and threaded, a handle attachment coupling screwed on said threaded ends for securing the frame about the glass, and a wedge piece extending between said ends actuated by said coupling for clamping-"the wedge piece against the glass.

2. A split ring of sheet material forming the rim-frame for a magnifying glass, integral ends of said sheet material being bent and threaded, a coupling having one end screwed on said threaded frame ends, a handle screwed into the other end of said coupling, and a wedge piece extending within the coupling between said frame ends, said handle having an extension for pressing the wedge piece against said glass on extending between the ends of said split rimframe, and means for adjusting the wedge with respect to the frame, said piece having a notched end contacting the lens.

HERMAN NEUWIRTH. 

